
<template>
   <div class="list" ref="wrapper">
	   <div>
		   <div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">
							<!-- 北京 -->
							{{ this.currentCity }}
						</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrapper" v-for="item in hot" :key="item.id" @click="handleCityClick(item.name)">
						<div class="button">
							{{ item.name}}
							</div>
					</div>
				</div>
			</div>
			<div class="area" v-for="(item,index) in cities" :key="index" :ref="index">
				<div class="title border-topbottom">
					{{ index }}          
				</div>
				<div class="item-list">
					<div class="item border-bottom" v-for="i in item" :key="i.id" @click="handleCityClick(i.name)">
						{{ i.name }}
					</div>                  
				</div>
			</div> 
			    
	   </div>
		       
	</div>
</template>

<script>
	import Bscroll from 'better-scroll'
	 import { mapState, mapMutations } from "vuex"
    export default {
		name:"List",
		props:{
			cities:Object,
			hot:Array,
			letter:String
		},
		computed:{
			...mapState({
				currentCity:"city"
			})
		},
		mounted () {
			this.scroll = new Bscroll(this.$refs.wrapper)
		},
		methods:{
				handleCityClick(city){
					// this.$store.commit("changeCityValue",city) 
					this.changeCityValue(city)    
					this.$router.push("/")            
				},
				...mapMutations(['changeCityValue'])
		},
		watch:{
			letter(){
				console.log(this.letter)
				if (this.letter) {
					const element = this.$refs[this.letter][0]
					console.log(element)
					this.scroll.scrollToElement(element)
				}
			}
		}
    }
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.border-topbottom
	&:before
		border-color: #ccc
	&:after
		border-color: #ccc
.border-bottom
	&:before
		border-color: #ccc

.list
	overflow: hidden
	position: absolute
	top: 1.58rem
	left: 0
	right: 0
	bottom: 0 
	// background:red
	.title
		line-height: .54rem
		background: #eee
		padding-left: .2rem
		color: #666
		font-size: .26rem
	.button-list
		overflow: hidden
		padding: .1rem .6rem .1rem .1rem
		.button-wrapper
			float: left
			width: 33.33%
			.button
				margin: .1rem
				padding: .1rem 0
				text-align: center
				border: .02rem solid #ccc
				border-radius: .06rem
	.item-list
		.item
			line-height: .76rem
			padding-left: .2rem



</style>